militants who could go violent. we don't have that type of a threat in the united states, but we do have one, i mean, that's pretty obvious and i think we have taken a little bit too lightly, the dangers of islamic militant propaganda in the united states. the extent to which mosques in the united states can reinforce that-- these attitudes. so, it is something that requires a lot more effort, i think, on the part of the bureau. >> what are the triggering episodes that inspire a young, young muslim americans to go over to al-qaeda? and i'm thinking in particular of this recent somali episode because it seems to some of them were radicalized, if that's the right word, by the invasion of ethiopia of somalia in 2007 which the united states supported. can it be just one event just like that? yes, i mean, there are many factors that obviously come into play and there have been some excellent studies looking islamic militants, particularly those affiliated in europe, and you do tend to see a pattern and that first of all, there tends to be, there's something deeply personal that strikes the believ